Automatic regulator for liquid-fuel burners.



No. 736,563. PATENTBD AUG. 18,1903.

A. U. STEWART.. l AUTOMATIC RUGULATUR PUR LIQUID TUBI. BURNERS,

AIPLIATION FILED 00T. 27. 1902.

IIA

I @kwalen/0n ivo. 736,563.

NirE STATES Fatented August 1x8,

PATENT OFFICE.

ALFRED CLEMENT STEVART, OFSANTA PVAULA, CALIFORNIA.

SPECIFICATION formingpartl of Letters Patent No. 736,563, dated August18, 1903.

Application filed October 27, 1902. Serial No. 129,038. (No model.)

To @ZZ 'whom t may concern:

Be it known that I, ALFRED CLEMENT STEW- ART, a citizen of the UnitedVStates, residing at Santa Paula, in the county of V cntura and State ofCalifornia, have invented a new and useful Automatic Regulator forLiquid-Fuel Burners, of which the following is a specification.

An object of this invention is to provide a device adapted forautomatically regulating the flow of oil and air or steam to ahydrocarbon-burner of the atomizing type, the same being adapted forsuccessful operation with heavy oils carrying solid impurities and beingself-contained and not liable to get out of order. This device comprisesa body having two ways'and valve-seats therein, valves for said seats,arod for operating said valve, means for yieldingly holding the valvesopen, and fluid-controlled means to operate said rod for closing thevalves. Said rod is desirably arranged for positively opening saidvalves and for positively closing one of said valves only, means beingprovided for yieldingly forcing the other valve toward its valve-seatand fluid-operated means being provided for operating the rod forclosing the valves. By making the valves operate independently of eachother, so far as their positive closing is concerned, it is possible toprovide for more simple construction, an d the oil-valve ismade moreaccessible for cleaning.

The invention relates to the construction and arrangment of the entiredevice and of portions thereo f, as will be more fully understood by theaccompanying drawings and the following specification.

Another object of the invention is to provide for maintaining correctproportions between the steam or other atomizing fluid and' oils ofdifferent gravities, and this is done by providing interchangeablevalve-seats for the oilway.

The accompanying drawings illustrate this invention.

Figure I is a general view showing my regulator in use with an atomizinghydrocarbonburner of any desired construction. Fig. II is a detachedelevation of the regulator viewed from the left in Fig. I. Fig. III is aplan of the same. Fig. IV is an axial section "on line IV IV, Figs. IIand III, looking left.

Vis a plan section on line V V, Fig. IV. VI is a plan section on lineVIVI, Fig. Fig. VII is a detail of a set of removable interchangeablevalve-seats for the oiloutlet 4, and a valve-seat 5 therebetween. 6

is a perforated head for one end 7 of said member, the perforation Sthereof communicaiing with the opening 9 in said end through a nipple10, by which said head 6 is desirably connected with the member 1. 11 isa duplex diaphragm. 12 is a diaphragm member fastened at its center tosaid head 6 and having a perforation 13 communicating with said endopening i). 14 is a second diaphragm member fastened at its edges to thefirst diaphragm member. 15 is a second head fastened to the seconddiaphragm member, at the center thereof. 16 is a valve for saidvalveseat 5. 17 is a valve-rod connecting said second head 15 with thevalve 1G. The purpose of the heads is to reinforce the diaphragm membersand prevent their rupture.

1S and 19 designate means for yieldingly collapsing the doublediaphragm, and thereby holding the valve 16 open. Said means desirablycomprises aspiral spring and the yoke 19, which has a boss 20, engagingthe head 15, and having a socket 21, in which a projecting portion 22 ofthe valve-rod 17 extends, thus to prevent the yoke from lateral orendwise displacement. The way 2 is desirably for the expansive fluid, asair or steam, by which the atomizer 23 is operated. The expansive fluidwill be supplied to the inlet 3 by means of a pipe 21 from thesteam-boiler 25 in case steam is used or from any suitable intermediatemeans (not shown) operated by steam-pressure from said boiler. It isdeemed sufficient for the explanation of this invention that it beillustrated simply as connected by the pipe 24 with the boiler 25, sothat as the steampressure rises in the boiler the diaphragm 11 will bedistended by the steam, thus forcing the valve 16 down toward thevalve-seat 5, thereby closing partially or wholly the orifice throughwhich the liuid may pass in way 2. 26 is a second open-ended memberfastened to said iirst member 1 and having a perforation 27communicating with the way 2 of said ICO iirst member and also having aninlet 28 and outlet 29 and a valve-seat 30 therebetween. 31 is a pinfitted in said perforation 27 and forming an extension of the valve-rod17 32 is avalve for said second valve-seat 30, and 33 a valve-stemtherefor operated by said pin 31 and forming a further extension of saidvalve-rod 17 34 designates means for yieldingly seating said secondvalve 32. 35 is a closure for that end 36 of said second member which isopposite the diaphragm. Said closure is desirably a cap having ascrewthreaded portion 37, which screws into the end 36 of the member 26.

33 is a guide for the upper end of the valvestem 33, the same beingdesirably a socketed boss projecting in from the cap and around whichthe spiral spring 34 isv mounted and by which it is held in place. Theupper end of the valve-stein 33 is desirably smooth and plays freelyback and forth in the socket 39 of the boss 3S.

The valve 32 is ydesirably provided with an angular boss 40 and isinternally screw-threaded to screw upon the screw-threaded portion 41 ofthe valve-stem 33.

42 is a j ani-nut by which the valve 32 is fixed Y at any desired placeon the valve-stem 33.

43, 44, and 45 are interchangeable valveseats for the oilway 46.

47 designates screws by which the requisite oil-valve seat will befastened in place in the oilway.

48 designates rivets fastening the diaphragm member 12 tothe first head46. Desirably the second head 15 is screwed onto the lower en d of thevalve rod 17 and is then fastened permanently by battering or rivetingthe rod 17 thereon, as indicated at 49 in Fig. IV.

50 is a shoulder desirably in the form of a jam-nut, which is fixed onthe valve-rod 17 The valve 16 is desirably screwed on the upper end ofthe valve-rod 17 and then locked by a Cotter-pin 5l.

52 is a socket in the .inner end of the valverod 17 to seat the lowerend of the pin which serves as a center for the stem 7 to hold the valvetrue relative to its seat 5. Desirably the valve-stem 33 simply abutsagainst the upper end of the pin 3l.

53 and 54 are the valves for controlling the supply of expansive iiuidand oil, respectively, to the inlets 3 and 2S.

The members 1 and 26 are readily detached from each other, beingdesirably fastened together by the screw-threaded boss 55 on the member26, screwed into the upper end of the member 1, and when thus fastenedtogether the two members form a practically unitary body having thesteamway 2 and oilway 46 therein.

In practical operation the steam acting on y the inner sides of thediaphragm members same time the spring 34 forces the valve 32 toward thevalve-seat 43 and the valve-stem 33 impinges on the pin 31, which issupported by the valve-rod 17.

In adjusting the appliance for practical use the valve 32 will bescrewed' onto the valve-steml 33 to such a point that when the valve 16is seated the valve 32 will be held slightly above its seat, so as toallow sufficient oil to pass through to maintain a pilot-light at theburner. 56 designates a vent in valve 17 to allow a small amount of.expansive fluid to pass through the way 2 when the valve 16 is fullyseated, thus to at all times maintain the pilot-light at the burner solong as the.

fuel is not shut off by the supply-valve.

The interchangeable valve-seats 43, 44, and 45 are respectivelyfurnished with orifices a Z) c of different sizes. readily thevalve-seat having a smaller-size orifice will be employed, while forthick oil a valve-seat having a larger orifice will be employed. By thisarrangement the operator* may adjust the appliance for satisfactory useof any determined oil. When the valve is at any determined point aboveits valve-seat, the effective area of opening for the passage of oilwill be determined by the circumference of the opening in the valve-seatand the distance between the valve and its seat, said opening beingincreased ordecreased relative to the steam-passage at 5 by applying thevalve-seat 43, 44, or 45 having the larger or smaller opening, asrequired.

Some oils are so thick that they will scarcely flow through a one-inchpipe, whereas other oils flow almost as freely as water. Consequently itis necessary in some instances to provide for a very large openingthrough which the oil may iiow and in other instances a very smallopening, while the flow of the expansive fluid is simply determined byits pressure regardless of the consistency of the oil.

In constructing a regulator from the manufactured parts the same areassembled as follows: The upper member 12 of the diaphragm is riveted tohead 6. The lower member 14 is then placed against it and their edgeslturned together to form steam 01 air tight joint. The jam-nut 50 isthen screwed on rod 17 and the lower end of the rod passed through thehole of the lower member of diaphragm and screwed into the lower head15,

thus clamping the diaphragm tightly between the jam-nut 50 and said head15. Then the rod will be riveted, as shown at 49, a sufficient portionof the rod projecting beyond the head 15 to form a guide for the yoke19. The upper head- 6 is then screwed to the steam .body 1 by means ofthe nipple 10. The valve 16 is'screwed upon the top of the rod 17 andfastened by a split key 51. The oil member 26 is then screwed into theupper end of steam member 1. Removable valveseat 43 is then fastened inplace by means of screws 47.

Pin 31 is then placed in hole 27.

For oil which flows IOO IIO

The oil-valve 32 is then screwed on valvestem 33 and jammed in place byjam-nut 42 and then placed on valve-seat 43. Then spiral spring 31 isplaced upon valve 52 and then cap 35 is screwed in place at the upperend of the oil member. Then the springs are secured in place by eyebolts57, passed through lugs 5S, which project from the body of theappliance, and nuts 59 are screwed on the ends of the bolts 57 andagainst the lugs 58. Then the yoke 19 is brought in position below thehead 15 and the ends thereof are caught into eyes (50 at the lower endsof the springs 18. Then the nuts 59 will be tightened to appropriatetension to normally hold the diaphragm collapsed and the valves open.

Access to the interior of the oilway and to the valve for the purpose ofcleaning the same or removing any obstruction may be had by unscrewingthe cap 35, thus allowing all of the parts pertaining to the oil member26 to be removed without disturbing any of the other parts.

Now having described my invention, what I claim, and desire to secure byLetters Patent of the United States, is-

1. A body having two ways and valve-seats therein; valves for saidseats; a rod arranged for positively opening both valves and forpositively closing one of said valves only; means for yieldingly closingthe other valve; means for yieldingly holding the rod in position foropening both valves; and duid-operated means for operating the rod forclosing the valves.

2. A body having two ways and valve-seats therein; valves for said seats5 a rod arranged for positively opening both valves and for positivelyclosing only one of said valves; means for yieldingly closing the othervalve; means for yieldingly holding the rod in position for opening bothvalves; and a diaphragm arranged to operate the rod and to receivepressure of iiuid from that way the valve of which is positively closedby said rod.

A hollow open-ended member having an inlet and an outlet, and avalve-seat therebetween; a perforated head for one end of said member,the perforation communicating with the opening in said end; a diaphragmmember fastened at its center pto said head and having a perforationcommunicating with said end opening; a second member fastened at itsedges to the iirst diaphragm member; a second head fastened to thesecond diaphragm member; a valve-rod connecting said second head withthe valve; a second openended member fastened to said first member andhaving a perforation communicating with the way of the first member, andalso having an inlet and an outlet and a valve-seat therebetween, a pinin said perforation and forming an extension of said valve-rod; a valvefor said second valve-seat; avalve-stem therefor operated by said pin;means for yieldingly seating said second valve; means for normallycollapsing the diaphragm; and a closure for the end of the second memberopposite the diaphragm.

a. In a device of the class described, in combination, a body having twoways and valveseats therein, valves for said seats, a rod arranged forpositively opening both valves and for positively closing only one ofsaid valves, means for yieldingly closing the other valve, a diaphragmarranged to operate the rod and to receive pressure of fiuid from thatWay the valve of which is positively closed by said rod, means foryieldingly supporting and strengthening said diaphragm, and means foryieldingly operating said diaphragm to normally hold said rod inposition for operating both valves.

5. In a device of the class described, in combination, a body having twoways and valveseats therein, valves for said seats, a rod arranged forpositively opening both of said valves and for positively closing onlyone of said Valves, means for yieldingly closing the other valve, atwo-part diaphragm arranged in operative connection with said rod, anopening communicating from one of said ways between the parts of saiddiaphragm, a yoke bearing against said diaphragm, and means yieldinglyforcing said yoke against said diaphragm to normally hold said rodinposition for opening said valves.

(5. In a device of the class described, in combination, a body havingtwo Ways and valveseats therein, valves for said seats, a rod arrangedfor positively opening both said valves and for positively closing oneof said valves, means for yieldingly closing the other valve, a two-partdiaphragm, heads supporting and strengthening the respective parts ofsaid diaphragm, a way opening through one of said heads and between theparts of said diaphragm, the other head operatively connected with saiddiaphragm, a yoke bearing against the last-named head, and means foryieldingly operating said last-nam ed head to hold said rod normally inposition to Open both said valves.

In testimony whereof I have signed my name to this speciiication, in thepresence of two subscribing witnesses, at Los Angeles, in the county ofLos Angeles and State of California, this Sth day of October, 1902.

ALFRED CLEMENT STEWART. lVitnesses:

JAMES R. ToWNsEND,

JULIA TowNsEND.

ICQ

IlO

